ISAR的短时傅立叶变换程序，用于ISAR成像时的频率估计-ISAR the short-time Fourier transform procedures, ISAR imaging for the estimated frequency

运用MUSIC算法对L型线阵的窄带信号频率方位角和俯仰角进行估计，实现目标定位-MUSIC algorithm using L-shaped linear array of narrow-band signal frequency to estimate the azimuth and elevation to achieve targeting